Definitions
1.NounA short (often less than 6'), broad (sometimes extremely broad) surfboard designed to be ridden in the surf in a kneeling position, and often having traction pads in the central area as an alternative to wax, to help the knees grip the deck.
2.NounA clipboard carried in the lap of an airplane pilot, on which basic flight data is recorded.
3.NounA short wakeboard designed to be ridden in the kneeling position.
4.Verbto surf or water-ski using a kneeboard